Chinese scientists are expected to develop a lithium battery that prevents combustion and explosion. Posted by benzoenergy.com
Research published in the latest issue of the American Chemical Society "NanoLetters" shows that Chinese scientists are expected to develop a lithium battery that is resistant to combustion and explosions. This lithium battery made of new materials is flexible, low-cost and safer.
The
team of materials scientist Tao Xinyong of Zhejiang University of
Technology replaced the traditional liquid electrolyte with a solid
electrolyte doped with magnesium borate. This is an organic-inorganic
composite material. The inorganic magnesium borate can improve the ionic
conductivity and mechanical properties of the electrolyte, while the
organic polymer can maintain flexibility and buffer the stress caused by
the volume change of the electrode material during charging and
discharging. A stable electrode interface was obtained.
Tao
Xinyong said that the reason why polymer solid electrolytes have been
difficult to achieve large-scale applications before is that the ionic
conductivity of such electrolytes is three orders of magnitude lower
than that of liquid electrolytes at room temperature. In the new
solid-state electrolyte material, magnesium borate can interact with
lithium salt anions to speed up the flow of lithium ions.
Tao
Xinyong said that magnesium borate is also a non-polluting,
low-toxicity flame retardant, which can increase the stability of the
fireproof carbon layer. Traditional liquid electrolytes are usually
composed of lithium hexafluorophosphate and flammable and explosive
ethylene carbonate and dimethyl carbonate. Energy storage devices such
as mobile phones and automobiles using liquid electrolytes have
potential safety hazards of combustion and explosion.
The
researchers say that the new material has improved ionic conductivity
to a large extent, but it has not yet fully achieved room temperature
operation and cannot be immediately industrialized, and further research
is needed.
BENZO Energy Technology Co.,Ltd
UFine Technology Co., Ltd
Site: www.bz-battery.com / www.benzoenergy.com
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